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The imprint of reionization on the star formation histories of dwarf galaxies
(Wiley Blackwell Publishing, Inc, 2015-04)
We use a compilation of star formation histories (SFHs) and cosmological simulations to explore the impact of cosmic reionization on nearby isolated dwarf galaxies. Nearby dwarfs show a wide diversity of SFHs; from ancient ...
Stellar Populations in a semi-analytic model I: Bulges of Milky Way-like galaxies
(Wiley Blackwell Publishing, Inc, 2017-12)
We study the stellar populations of bulges of MilkyWay-like (MW-like) galaxies with the aim of identifying the physical processes involved in the formation of the bulge of our Galaxy. We use the semi-analytic model of ...
γ-ray/infrared luminosity correlation of star-forming galaxies
(EDP Sciences, 2020-09)
Context. Nearly a dozen star-forming galaxies have been detected in γ-rays by the Fermi observatory in the last decade. A remarkable property of this sample is the quasi-linear relation between the γ-ray luminosity and the ...
On the nature of small galaxy systems
(Wiley Blackwell Publishing, Inc, 2018-12)
We aim at defining homogeneous selection criteria of small galaxy systems in order to build catalogues suitable to compare main properties of pairs, triplets, and groups with four or more members. To this end we use ...
Identification and analysis of the young population in the starburst galaxy NGC 253
(Wiley Blackwell Publishing, Inc, 2018-07)
We present a study of the young population in the starburst galaxy NGC 253. In particular, we focused our attention on searching young star groups, obtaining their main properties and studying their hierarchical organization. ...
Effective temperature of ionizing stars of extragalactic HII regions
(Wiley Blackwell Publishing, Inc, 2017-01-07)
The effective temperature (Teff) of the radiation field of the ionizing star(s) of a large sample of extragalactic HII regions was estimated using the R = log([O II] (λλ3726 + 29)/[O III] λ5007) index. We used a grid of ...
The faint host galaxies of CIV absorbers at z > 5
(Wiley Blackwell Publishing, Inc, 2020-02-18)
We explore the expected galaxy environments of CIV absorbers at z > 5 using the Technicolor Dawn simulations. These simulations reproduce the observed history of reionization, the z ~ 6 galaxy stellar mass function, the ...
Properties of galaxies with ring structures
(EDP Sciences, 2021-09)
Aims: We present a statistical analysis of different characteristics of ringed spiral galaxies with the aim of assessing the effects of rings on disk galaxy properties. Methods: We built a catalog of ringed galaxies from ...
Satellites and central galaxies in SDSS: The influence of interactions on their properties
(Wiley Blackwell Publishing, Inc, 2021-02)
We use SDSS-DR14 to construct a sample of galaxy systems consisting of a central object and two satellites. We adopt projected distance and radial velocity difference criteria and impose an isolation criterion to avoid ...
Observational hints of radial migration in disc galaxies from CALIFA
(EDP Sciences, 2017-08)
According to numerical simulations, stars are not always kept at their birth galactocentric distances but they have a tendency to migrate. The importance of this radial migration in shaping galactic light distributions is ...